gpu: Add CopyTexImage function to GLImage API.

content/common/gpu/stream_texture_android.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/common/gpu/stream_texture_android.h"
 
 #include "base/bind.h"
 #include "content/common/android/surface_texture_peer.h"
 #include "content/common/gpu/gpu_channel.h"
 #include "content/common/gpu/gpu_messages.h"
@@ skipping 184 matching lines @@
 
 bool StreamTexture::BindTexImage(unsigned target) {
   NOTREACHED();
   return false;
 }
 
 void StreamTexture::ReleaseTexImage(unsigned target) {
   NOTREACHED();
 }
 
+bool StreamTexture::CopyTexImage(unsigned target) {
+  NOTREACHED();

[no sievers, 2014/09/05 21:06:09]

Don't we trigger this from
WebMediaPlayerAndroid::copyVideoTextureToPlatformTexture()?

[reveman, 2014/09/06 04:02:57]

Ah, maybe. I just assumed it would not based on BindTexImage never being called.
Maybe we should allow Bind/ReleaseTexImage to be called too for consistency? And
actually call them if these images are being bound to textures as other images.

+  return false;
+}
+
 bool StreamTexture::ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                                          int z_order,
                                          gfx::OverlayTransform transform,
                                          const gfx::Rect& bounds_rect,
                                          const gfx::RectF& crop_rect) {
   NOTREACHED();
   return false;
 }
 
 }  // namespace content